Product Name
El Chapo OG Feminized
RKS GENETICS
CANNASAFE LABORATORIES
Independent Third-Party Verification Lab
2440 Industrial Pkwy West · Hayward, CA 94545
Tel: (510) 555-2240 · lab@cannalytics-coa.com
License #: C8-0000176-LIC
CERTIFICATE OF ANALYSIS
· GENETICS PROFILE ·
DOC ID: CAN-2026-04-ECO-0906
Lab verify
cannalytics·coa
cannalytics·coa
RKS genetics
royalkingseeds.de
royalkingseeds.de
LIMITED BATCHGeneration:AUTO F5·Line:RKS Master Selection
Phenotype:ECO-Pheno #3 (Grape-Forward)
Client / Brand
Royal King Seeds Ltd.
Strain Genetics
Autoflower Indica (13/87)
Sample ID
RKS-ECO-AUTO-0906
Batch / Lot Number
ECO-2026-0906
Production Date
2026-03-10
Date Received
2026-04-13
Date of Analysis
2026-04-20 — 2026-04-26
RKS Stabilized Line
Auto · Trait-Locked
Verified Genetics
ISO 17025 Co-Signed
Breeder-Selected Phenotype
ECO-Pheno #3 of 11
RKS BREEDER NOTES
Batch No. ECO-2026-0906 · Limited Batch · Cycle 55
From the RKS Breeding Floor
Our El Chapo OG line was hand-selected for the resin-coated, compact phenotype that defines this strain at its best. Cohort screening across multiple cycles produces the variation envelope shown in the consistency section; only mothers falling within the envelope are kept in the line. This batch reflects the genetic potential of the RKS El Chapo OG stabilized line. The line traces to a Grape Ape × Granddaddy Purple cross, with each generation selected to fix the traits that define El Chapo OG.
Breeding Objective · ECO-Pheno #3
- Fix the phenotype expression that defines this strain
- Improve resistance to common pathogens under indoor SOP
- Maintain commercial yield bands across cycles
- Reduce flower-window variance ≤ 5 days within cohort
D. Van Royen
Master Breeder · Royal King Seeds
Genetics verified by RKS Breeding Team
Genetics verified by RKS Breeding Team
Total THC
20.6%
Total CBD
0.31%
Total Terpenes
2.03%
Safety
ALL PASS
Cannabinoid Profile
| Analyte | Distribution | Result (%) | mg/g | LOQ |
|---|---|---|---|---|
| THCa | 22.27 | 222.7 | 0.05 | |
| Δ9-THC | 1.07 | 10.7 | 0.05 | |
| CBDa | 0.25 | 2.5 | 0.05 | |
| CBD | 0.09 | 0.9 | 0.05 | |
| CBG | 1.00 | 10.0 | 0.05 | |
| CBC | 0.49 | 4.9 | 0.05 | |
| CBN | 0.18 | 1.8 | 0.05 | |
| Total THC ((THCa × 0.877) + Δ9-THC) | 20.6 | 206.0 | — |
LOQ = Limit of Quantitation. ND = Not Detected. Results reported on dry-weight basis.
Terpene Profile
| Terpene | Concentration | Result (%) | mg/g | Aroma Note |
|---|---|---|---|---|
| Myrcene | 0.820 | 8.20 | Earthy, mango | |
| Caryophyllene | 0.560 | 5.60 | Spicy, peppery | |
| Linalool | 0.420 | 4.20 | Lavender, sweet | |
| Valencene | 0.180 | 1.80 | Sweet orange | |
| Ocimene | 0.050 | 0.50 | Sweet, herbal | |
| Total Terpenes | 2.03 | 20.30 | Earthy, mango |
Safety & Contaminant Screen
Pesticides & Plant Growth Regulators
66-analyte panel · LC-MS/MS & GC-MS/MS
Heavy Metals
Pb, Cd, As, Hg · ICP-MS
Microbial Impurities
Salmonella, STEC, Aspergillus spp. · qPCR
Mycotoxins
Aflatoxins B1, B2, G1, G2 · Ochratoxin A · LC-MS/MS
Residual Solvents
Cat I & II solvents · GC-MS Headspace
Foreign Matter
Visual + microscopic inspection
Filth & Foreign Materials
Insect frag., mammalian excreta, hair, mold
Water Activity & Moisture
aw meter · oven loss-on-drying
Quality Metrics
Moisture Content
10.3%
Water Activity (aw)
0.60
Density (g/mL)
0.38
Phenotype Consistency & Stabilization Line
Phenotype Consistency
The values reported on this Certificate reflect the top-performing phenotype(ECO-Pheno #3) selected from a 11-plant cohort of the RKS El Chapo OG Auto line. Across three production cycles, individual plants from this seed line have fallen within a 10–15% variation envelope on total cannabinoids and total terpene yield when grown under comparable indoor conditions.
Note: phenotype expression is subject to environmental conditions (light, nutrients, VPD, training). These figures are not a guarantee of grow outcome.
Stabilization Status
AUTO F5This line has been stabilized through successive inbred generations with phenotype-driven selection. Trait-locking criteria for the ECO-Pheno #3 selection:
- Resin-dominant (myrcene > 0.55%)
- Heavy body-effect uniformity
- Compact node spacing ≤ 6 cm
- Cold-tolerant under nighttime drops (15°C)
- Bud density ≥ 0.40 g/mL
- Cohort flower variance ≤ 5 days
Expected Grow Outcomes
Flower Time
10 – 12 Wochen (Samen bis Ernte)
weeks
Yield (Indoor)
390–580
g / m²
Yield (Outdoor)
190–430
g / plant
Plant Height
80–140
cm total
Difficulty
Easy
beginner+
Reference outcomes are based on RKS breeding-room conditions: 600–900 PPFD, VPD 1.0–1.4 kPa, mineral-fed coco substrate, 18/6 veg · 12/12 flower. Outcomes will vary with cultivator skill, environment, and phenotype selection.
Analytical Methods
HPLC-DAD
Cannabinoid potency by reverse-phase HPLC with diode array detection. SOP-CAN-101 Rev 4.
GC-FID Headspace
Terpene quantification · 38-analyte target list. SOP-TER-204 Rev 2.
LC-MS/MS & GC-MS/MS
Pesticide and mycotoxin screening with QuEChERS prep. SOP-PES-310 Rev 5.
ICP-MS
Heavy metals (Pb, Cd, As, Hg) digested via microwave HNO₃. SOP-MET-115 Rev 3.
qPCR Microbiology
PathoSEEK® assay for Salmonella, STEC, and Aspergillus. SOP-MIC-401 Rev 2.
GC-MS Headspace (Solvents)
Cat I & II residual solvents per USP <467>. SOP-RSV-220 Rev 3.
Laboratory Authorization
Dr. Anton Kovacs
Dr. Anton Kovacs, M.Sc.
Lead Analyst · GC-MS / HPLC Group
Elena Whitford
Elena Whitford
Laboratory Director · ISO 17025 Approving Officer
Disclaimer of variation · Results published in this Certificate represent a selected phenotype of the RKS El Chapo OG Auto stabilized line under controlled indoor conditions. Individual seedlings may produce plants that vary by approximately 10–15% on total cannabinoids and terpene output, and may express alternate phenotypes within the line. Final cannabinoid and terpene expression is subject to cultivator inputs — lighting, substrate, nutrient regime, environment, and training technique. This document is intended as a reference benchmark of the genetic potential of the RKS El Chapo OGline, not as a guarantee of any individual plant’s outcome.
Note for seed buyers · This Certificate analyzes mature, cured flower from a selected reference plant cultivated by the RKS breeding team under controlled conditions. Seed-grown plants may vary slightly from the tested phenotype depending on environment, nutrient regime, and grower input. For best expression of the ECO-Pheno #3profile, follow the cultivation reference outlined in the “Expected Grow Outcomes” section above.
Note for seed buyers · This Certificate analyzes mature, cured flower from a selected reference plant cultivated by the RKS breeding team under controlled conditions. Seed-grown plants may vary slightly from the tested phenotype depending on environment, nutrient regime, and grower input. For best expression of the ECO-Pheno #3profile, follow the cultivation reference outlined in the “Expected Grow Outcomes” section above.